Hamidou Diallo (born July 31, 1998) is an American professional basketball player for the Oklahoma City Thunder of the National Basketball Association (NBA). He played college basketball for the Kentucky Wildcats. He was a consensus 5-star prospect, and one of the top rated basketball players in the class of 2017. Diallo is of Guinean descent. His parents, Abdoulaye and Marima, emigrated to New York from Guinea. He won the 2019 Slam Dunk Contest.